Title of article
Color change of toluidine blue induced by polyanionic quantum dots
Author/Authors
K.K. and Gattلs-Asfura، نويسنده , , Kerim M. and Naistat، نويسنده , , David M. and Leblanc، نويسنده , , Roger M.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2006
Pages
4
From page
471
To page
474
Abstract
The surface of 4.1 nm CdSe/ZnS, core/shell, quantum dots was stabilized with cysteine (Cys) or thioglycolic acid (TGA) ligands. Electrostatic interactions between the polyanionic quantum dots (QDs) and positively charged toluidine blue were studied by UV–vis absorption spectroscopy and Förster resonance energy transfer. The surface net charge on the QDs highly correlated with the dyeʹs degree of metachromasia, which served as a direct and convenient surface electrostatic probe for negatively-charged nanoparticles.
Keywords
Quantum dots , Toluidine blue , Surface net charge , Metachromasia
Journal title
Colloids and Surfaces A Physicochemical and Engineering Aspects
Serial Year
2006
Journal title
Colloids and Surfaces A Physicochemical and Engineering Aspects
Record number
1792677
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